Recoil spring assembly

Abstract

A spring recoil assembly (20) for use in a crawler type track roller frame (12) includes an elongated tubular housing (28) (46) having opposite open ends, a stop (36) at least partially closing one of the ends, a compression coil spring (30) within the housing and abutting the stop, a radially inwardly directed lip (48) on the other end of the housing having an inner diameter greater than the outer diameter of the spring, and an additional stop (52) within the housing other end and with, the first stop, sandwiches the spring within the housing. The additional stop has a periphery sized to freely pass into the housing past the lips. A retainer (60,62) is positioned within the housing between the additional stop (52) and the lip (48).

What is claimed is: 
     
       1. A spring recoil assembly for use in a crawler type track roller frame comprising: elongated tubular housing (28,46) having opposed open ends and defining a spring receiving space;   a stop (36) at least partially closing one of said ends;   a compression coil spring (30) within said space and abutting said stop;   radially inwardly directed lip means (48) on the other end of said housing means and having an inner diameter greater than that of said spring;   an additional stop (52) within said other end and together with said first stop sandwiching said spring within said space, said additional stop having a periphery sized to freely pass into said space through said other end past said lip means; and   a retainer (60,62) within said space between said additional stop and said lip means and abutting at least said lip means, said retainer having a diameter greater than said inner diameter and at least one retaining portion smaller than said additional stop periphery said retainer comprising two elements each having an arcuate outer periphery of about 180°.   
     
     
       2. The spring recoil assembly of claim 1 wherein said elements are defined by a split ring and have a reduced thickness (66) at their common diameter. 
     
     
       3. The spring recoil assembly of claim 2 wherein said elements have an annular recess (58) of a diameter such as to receive the periphery of said additional stop to substantially center the same on the axis to said housing means, said additional stop further mounting an axially directed guide tube (54) within said spring. 
     
     
       4. A spring recoil assembly for use in a crawler type track roller frame comprising: elongated tubular housing means (28,46) including a tube having opposed open ends and defining a spring receiving space;   a stop (36) at least partially closing one of said ends;   a compression coil spring (30) within said space and abutting said stop;   a collar secured on the other end, said collar having an inner diameter equal to the outer diameter of said tube and having a radially inwardly directed lip means axially spaced from said other end to define a recess therebetween;   an additional stop (52) within said recess and together with said first stop sandwiching said spring within said space, said additional stop having a periphery sized to freely pass into said recess through said other end past said lip means; and   a retainer (60,62) within said recess between said additional stop and said lip means and abutting at least said lip means, said retainer having a diameter greater than the inner diameter of said lip means and at least one retaining portion smaller than said additional stop periphery.